In the nominative reading, these nouns are conjoined to 'gardens'.

وَزَرْعٌ وَنَخِيْلٌ صِنْوَانٌ وَغَيْرُ صِنْوَانٍ

In the genitive, the nouns are conjoined to 'grapes', so they are types of garden.

وَزَرْعٍ وَنَخِيْلٍ صِنْوَانٍ وَغَيْرِ صِنْوَانٍ

وزرع ونخيل صنوان وغير صنوان

This reading has the first-person majestic plural, referring to God.

This reading continues to refer to God's acts in the third person.

Abū Jaʿfar al-Madanī

Ibn ʿĀmir al-Shāmī

Nāfiʿ al-Madanī

Ḥamzah al-Zayyāt

Ibn Kathīr al-Makkī

Khalaf al-Bazzār

Abū ʿAmr al-Baṣrī

al-Kisāʾī

Yaʿqūb al-Ḥaḍramī

ʿĀṣim al-Kūfī

Ibn Wardan

Ibn Jammaz

Hishām

Ibn Dhakwān

Warsh

Qalun

Khalaf

Khallad

Al-Bazzi

Qunbul

Isḥaq

Idrīs

Ad-Duri

As-Susi

Abu al-Harith

Ruwais

Rawḥ

Shuʿbah

Ḥafṣ

وَفِى ٱلْأَرْضِ قِطَعٌ مُّتَجَـٰوِرَٰتٌ وَجَنَّـٰتٌ مِّنْ أَعْنَـٰبٍ وَزَرْعٌ وَنَخِيلٌ صِنْوَانٌ وَغَيْرُ صِنْوَانٍ يُسْقَىٰ بِمَآءٍ وَٰحِدٍ وَنُفَضِّلُ بَعْضَهَا عَلَىٰ بَعْضٍ فِى ٱلْأُكُلِ ۚ إِنَّ فِى ذَٰلِكَ لَـَٔايَـٰتٍ لِّقَوْمٍ يَعْقِلُونَ