Wheat.

Wheat planting distribution range

North China: Beijing, Tianjin, Hebei, Henan, Shanxi;

East China: Shandong, Jiangsu, northern and central Anhui;< /p>

Central China: Jiangxi, Hubei;

Northwestern region: Shaanxi, Gansu, Qinghai, Ningxia, Xinjiang;

Northeast region: Liaoning, Jilin, Heilongjiang;< /p>

Southwestern region: Chongqing, Sichuan, Guizhou;

Northern region: Inner Mongolia, Xinjiang.

Extended information:

Notes

1. Maintain good soil structure and moisture. No-tillage does not disturb the soil layer and maintains the original pores of the paddy soil. , to avoid sticking phenomenon caused by wet tillage. Compared with no-tillage and plowing, the soil bulk density of the tillage layer is 1.15-1.20 and 1.34-1.40 respectively, and the water and air are relatively coordinated.

2. It is conducive to improving the quality of sowing. On the premise of ensuring timely sowing, the flat surface of the field is conducive to digging nests or trenching for on-demand sowing. The implementation of planting standards avoids deep seeds and clusters caused by rough tillage and bad sowing. The seeds are exposed and the seeds are exposed, and the seedlings are uniform, uniform and strong.

3. Well-developed root system and strong lodging resistance. The soil structure is good, which is conducive to root system development and water absorption. According to multi-point surveys, the number of secondary roots per plant in no-tillage is 16.0% more than that in plowing. The grain-filling period was measured with 32p tracer. On the 8th day after marking, the number of pulses was 63.01% higher.

4. Strong seedlings appear early and yield is significantly increased. No-till fields have a better soil ecological environment. Seedlings emerge quickly, tiller early, and have obvious growth advantages. In each growth period, the leaf area index of no-tillage is high, the photosynthetic capacity of the population is strong, and the yield per unit area is increased by 5 to 20%.

Since the positioning study (4 years), there has been no adverse impact on post-cropped rice. However, the relationship between long-term no-tillage and soil fertility, diseases and insect pests needs to continue to be explored. In addition, no-till fields have many weeds and are prone to fertilizer loss in the later stages, so appropriate supporting measures should be taken.

Reference: Baidu Encyclopedia-Wheat